749438 has 4 divisors (see below), whose sum is σ = 1124160. Its totient is φ = 374718.

The previous prime is 749431. The next prime is 749443. The reversal of 749438 is 834947.

It is a semiprime because it is the product of two primes.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 749398 and 749407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749431) by changing a digit.

749438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187358 + ... + 187361.

It is an arithmetic number, because the mean of its divisors is an integer number (281040).

2⁷⁴⁹⁴³⁸ is an apocalyptic number.

749438 is a deficient number, since it is larger than the sum of its proper divisors (374722).

749438 is a wasteful number, since it uses less digits than its factorization.

749438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374721.

The product of its digits is 24192, while the sum is 35.

The square root of 749438 is about 865.7008721262. The cubic root of 749438 is about 90.8333301537.

The spelling of 749438 in words is "seven hundred forty-nine thousand, four hundred thirty-eight".